The Project resource is comprised of low to intermediate sulfidation epithermal silver, lead, and zinc mineralization within stockworks, veins, and breccias. The Main, Minas, and Este areas are generally structurally controlled along a general north-northwest strike. The Este area is limited by the overlying post mineral tuff.

The general forms of economic mineralization in the Project area are comprised of freibergite (silver-bearing tetrahedrite), galena (not argentiferous), sphalerite (white to dark-colored), pyrite, marcasite, other silver sulfosalts (myrargyrite, pyrargyrite-proustite [ruby silver], and boulangerite), acanthite, and minor native silver.

The veining is found in the 23 Ma mineralized tuff package. The mineralized veins occur in two forms; in large veins associated with the predominant listric fault structures and in stockwork veins found in the surrounding rocks. The larger principle veins are generally rich in quartz / silica and barite and contain typical higher lead-zinc-silver mineralization and can be several meters in width and are quite continuous along strike and down dip. The stockwork veins occur in the wall rock between the faults and also contain significant lead-zinc-silver mineralization. The stockwork veins tend to be mineralized with fine black sulfide mineralization, indicating rapid emplacement and quenching of the mineralizing fluids. The stockwork veins tend to be randomly oriented suggesting that vein formation was controlled by fluid movement into the rock mass that was broken or weakened by the regional tectonic activity forming the listric faults.

The primary sulfides are pyrite-marcasite, boulangerite (a lead antimony sulfosalt), sphalerite (high and low Fe component), and galena. Zinc mineralization in the form of sphalerite may or may not be colocated with silver mineralization. There are zones, particularly in the Minas area, where zinc mineralization is outside of the silver mineralization. The majority of the lead occurs as galena but lead can also occur as plumbogummite, a lead aluminum phosphate, which has a lower flotation recovery than lead sulfide minerals. Mineralization in surface outcrops, and drill core is generally associated with iron and manganese oxides, barite, and silica. Silicification is both pervasive and structurally controlled in veins.

The Corani Project will be mined using conventional open pit mining methods, with either an owner mine equipment or a contractor mining scenario. The base case assumes contractor mining. The rock will be broken by drilling 0.156-m diameter blast holes and blasting with ANFO and emulsion. Broken rock will then be loaded into 130-136 tonne trucks using a 13 m3 front end loader or one of two 15 m3 hydraulic shovels. Support equipment includes two D10 bulldozers, a road grader, water trucks, rubber tire dozer, compactor, excavator, fuel and lube trucks, and other miscellaneous equipment.

During a 10-month pre-production stripping, pioneering, haul road construction phase prior to plant construction, 4.7 million tonnes of waste rock will be mined to generate construction material. Another 7.6 million tonnes will be mined immediately prior to production. The mine is designed to generate 7.875 million tonnes of ore per year with strip ratios of 3:1 to 4:1 during the first two years, falling to below 2:1 the third year, and then below 1:1 the final 3 years of the mine life.

The process plant has been designed to treat 22,500 t/d of ore, operating 350 days per year and an average availability of 92%.

For this purpose, the following process stages have been designed:

- Primary Crushing and Coarse Ore Stockpile
- SAG – Ball Mill
- Sequential Lead and Zinc Flotation
- Concentrate Thickening and Filtering (Pb, Zn)
- Tailings Thickening and Filtering Plant
- Dry Tailings Disposal Plant
- Reagents and Utilities Areas.